Block top - The block selection and duration of the blockchain (in blocks) on creation of the current block Nonce - The transaction quantity to the from address (Keep in mind this begins at 0 so a nonce of 100 would actually be the one hundred and first transaction submitted https://reallivesocial.com/story6348147/detailed-notes-on-blockchain-explorer-unconfirmed-transaction-http-www-stes-tyc-edu-tw-xoops-modules-profile-userinfo-php-uid-3693980